Here is search logs of 650,000 AOL users. It's very interesting to view search history of particular person and analyze his personality. Let's do it together! Read more about AOL search database scandal or view research papers on web searching.
ec50
The term half maximal effective concentration (EC50) refers to the concentration of a rug which induces a response halfway between the baseline and maximum. It is commonly used as a measure of drug potency.